Thermostat Apparatus
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus comprising a movable temperature sensing member (39) capable of sensing mainly the temperature of high-temperature coolant flowing in from a high-temperature coolant port (33) and driving toward the side of the high-temperature coolant port (33) in dependence upon the sensed temperature; a main valve (36) fitted integrally to the movable temperature sensing member (39) and constructed so as to render a low-temperature coolant port (31) and a mixing compartment (32) openable in conformity to the driving of the movable temperature sensing member (39) toward the side of the high-temperature coolant port (33), thereby controlling the inflow rate of low-temperature coolant from the low-temperature coolant port (31) to the mixing compartment (32); and a high-temperature coolant inducing part (42) communicating with the high-temperature coolant port (33) and adapted to regulate the flow of high-temperature coolant from the high-temperature coolant port (33) toward the surround of the movable temperature sensing member (39) and effect outflow thereof to the mixing compartment (32).
47 Citations
21 Claims
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1-8. -8. (canceled)
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9. A thermostat apparatus provided in a coolant circuit of an engine or the like, and having a temperature sensitive movable part incorporating a thermal extension body which thermally expands or contracts in response to a change in temperature of a coolant, and a piston shaft which has one end retained in the temperature sensitive movable part and slides in response to thermal expansion or contraction of the thermal extension body, the thermostat apparatus opening or closing a valve body as the piston shaft is driven, characterized in that
a conduit for bypassing a high-temperature coolant heated by the engine to the thermostat apparatus is structured so as to extend until the conduit covers all of or a part of the temperature sensitive movable part and to form a high-temperature coolant conduit having an inside diameter commensurate with an outside diameter of the temperature sensitive movable part in such a way as to cause the high-temperature coolant flowing the conduit to directly contact a periphery (bottom surface/side surface) of the temperature sensitive movable part without impairing a temperature and a flow rate of the high-temperature coolant, and then let the high-temperature coolant flow out of an ejection opening.
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16. A thermostat apparatus provided in a coolant circuit of an engine or the like, and including an engine coupling port for letting a high-temperature coolant heated in the engine flow in, a bypass port for returning a coolant to the engine, and a radiator coupling port for feeding the coolant to a radiator, and having a temperature sensitive movable part incorporating a thermal extension body which thermally expands or contracts in response to a change in temperature of a coolant, and a piston shaft which has one end retained in the temperature sensitive movable part and slides in response to thermal expansion or contraction of the thermal extension body, the thermostat apparatus opening or closing a valve body as the piston shaft is driven, characterized by including:
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a high-temperature coolant conduit communicating with the bypass port and guiding the high-temperature coolant from the engine coupling port to a periphery of the temperature sensitive movable part, and then letting the high-temperature coolant flow out to the bypass port; and a bypass valve provided on a bypass port side of the temperature sensitive movable part, wherein the high-temperature coolant conduit is structured in a cylinder shape with a height adjusted so that the temperature sensitive movable part is always exposed to the high-temperature coolant flowing from the engine coupling port, and the bypass valve is structured so as to be freely inserted in the high-temperature coolant conduit according to a drive state of the temperature sensitive movable part.
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Specification